Your questions are very interesting and I think you’ve got a lot of god answers. However from a philosophical point of view there are other questions that also need an answer. As some mentioned evolution has created over 10 million of species. Various kind of monkeys apes gorillas, kangaroos, and others. Humans seem to stand for the moment on the top of this chain. But how?
The terrible answer is by eating one another.
Every specimen from insects, fishes, frogs, mammals, birds, cats, dogs and humans are in fact living only by eating the other. If good has created us (with sharp tees, poison A.S.F) with this ability He must have understood, that it would cause disaster for all his children on earth. Only the smartest and strongest can survive this battle. If good has created us in this way, he must have had plan to come back and see who or what has survived?.. In fact, if you go on the Bible stories it looks like good really like to play with his puppies, like a child. He/she killed all these humans and animal in masses, when he feels for it. No regrets, no answers on prayers from any the millions Catholics, Muslims, Pentecostal, Lutherans (or whatever).
From my philosophical point of view, good is better off if he really doesn´t exist. We as humans can understand with our own wisdom, that evilness, comes from evolutionary facts. We have no alternative then just to eat each other.
Bugbear